E - Fixed Constructions – 01 – C
Patent
E - Fixed Constructions
01
C
E01C 23/06 (2006.01)
Patent
CA 2409484
A method and apparatus are provided for in situ rejuvenation of asphalt pavement. The apparatus and method provide for heating the underlying surface to form a preheated surface, passing a mill over the preheated surface and milling the preheated surface to loosen the preheated surface to a desired depth and discharging the milled material from opposite ends of the respective windrows of known breadth. Windrow height is measured as is rate of advance of the transport structure to determine a volume throughput. Rejuvenating fluid is added to each windrow at a dosage rate based on a desired weight percentage and the volume throughput. A mixer is passed over the windrows and receives the windrows through respective openings at either end thereof. The mixer also blends the rejuvenating fluid with the milled material and forms a blended mixture which is discharged from the mixer. The mixer may be a pug mill operated in an inverted arrangement utilizing the road surface as a bottom thereto.
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